The Supermicro SC742 case is a special case designed to accommodate Extended ATX motherboards (12" x 13.05" or 304.8mm x 331.5mm), which are too large for the Alienware full tower or Alienware Classic cases.

This case can be serviced through the left side panel. The right side panel is not removable.

Stand in front of the computer, and locate the release tab on the left side panel (Figure 1).

Figure 1: Release Tab (Click on the Image to enlarge)

Note:

It is possible to open the case while it is in the vertical position; however, it is recommended turning the computer on its right side before trying to open the latch.

Using the thumb, push down the release tab on the left side panel, and hold it pressed while pushing the cover toward the rear of the chassis. It requires considerable effort to push the button and slide the cover. It should stop after moving about ÃÂ½ inch (Figure 2).

Figure 2: Push the Release Tab

Lift the side panel just a couple of inches above the computer, but do not take it away yet.

The computer may be equipped with a Kool-Max fan, located on the left side panel. Unplug the power connector before taking the panel away. The wire has enough slack to disconnect it safely. After unplugging the fanÃÂs power connector, the panel can be taken away.

Place the left side panel in a safe location. Do not place it on a hard or coarse surface as the finish may be damaged (Figure 3).

Figure 3: Computer After Removing the Side Panel (Click on the Image to enlarge)

Steps to install the panel.

Turn off the computer.

Unplug the AC power cord.

It is possible to install the case while it is in the vertical position; however, it is recommended to turn the computer on its right side. Place the panel next to the computerÃÂs case, but do not lay it on top of the case yet.

Connect the KoolMax fan (The fan located in the side panel, if present) to an unused power supply output.

Place the left side panel on the computer, with the panelÃÂs latch facing the front of the case, leaving a ÃÂ½ inch gap at the front edge. The panel should sit properly on the caseÃÂs opening.

Slide the panel toward the front of the case until a slight clicking sound is heard. This will make sure that the latch is fully engaged.

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